Some good news about cethromycin, the new ketolide antibiotic undergoing
clinical trials:

Unlike the first ketolide, Ketek, cethromycin appears to be well
tolerated by patients suffering from hepatic impairment; no dose
adjustment is needed.

And cethromycin appears to be as effective as Ketek against the same
strains of bacteria.

http://tinyurl.com/2bdklu

Ketek was a bitter disappointment owing to its sometimes irreversible
and fatal side effects.
Hopefully cethromycin will check out!